brake MAZDA CX90 2024 Service Manual

Smart Brake Support (SBS) forward
drive detection
NOTE
When driving on roads with few
vehicles ahead, a message may
temporarily be displayed on the
screen indicating that the front radar
sensor is dirty.
When the vehicle is driven on roads
in which there is an elevated road on
one side, the front radar sensor
function may be restricted
temporarily.
If the lead-acid battery power is
weak, the front radar sensor
detection function may decrease and
each system may not operate
normally.
When any of the following
conditions is met, the front radar
sensor may not be able to detect
vehicles ahead or obstructions
correctly.
During inclement weather.Front visibility is reduced.The vehicle is driven near facilities
or objects emitting strong radio
waves.
The rear surface of a vehicle ahead
does not reflect radio waveseffectively.
A vehicle ahead has limited areas
that can reflect radio waves.
Your vehicle is tilted.Foreign matter is adhering to parts
near the front radar sensor.
When any of the following
conditions is met, the front radar
sensor may detect vehicles in the
adjacent lane or surrounding
obstructions, or it may not be able to
detect vehicles ahead or
obstructions.
The vehicle is entering or exiting a
curve.
The vehicle is driven on a
continuously curving road.
The vehicle is driven on roads with
repeated up and downslopes.
The vehicle is driven on roads with
narrow lanes.
The vehicle is driven on poor roads
or unpaved roads.
The vehicle ahead enters the front
radar sensor’s blind spot.
The distance to the vehicle ahead
is extremely close.
The vehicle ahead is being driven
in an unstable condition.
A vehicle suddenly comes close
such as by cutting into your lane.
Front side radar sensors
The following system utilizes front side
radar sensors.
Front Cross Traffic Alert (FCTA)Smart Brake Support (SBS) Front
Crossing
NOTE
When any of the following
conditions is met, the front side
radar sensors may not be able to
detect target objects.
During inclement weather.The vehicle is driven on a sharp
curve or on bumpy roads.
Radar sensor from an adjacent
vehicle causes radio wave
interference.
The detection range of a front side
radar sensor is obstructed by an
adjacent wall or vehicle, or the
radar is reflected.
A vehicle suddenly enters the
detection range from the front or
side of your vehicle.
Driving
Radar Sensors
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The target object is extremely
small.
The target object is extremely low/
high.
A vehicle approaches while
turning.
A vehicle that has stopped
suddenly starts to move.
Multiple objects move at the same
time.
The bumper around a front side
radar sensor is deformed.
Foreign matter is adhering to the
bumper around a front side radar
sensor.
The temperature near a front side
radar sensor is extremely hot.
The front side radar sensors may not
detect the following target objects.
Animals.Pedestrians.Bicycles and small motorcycles
moving at a low speed.
Shopping carts.Stationary objects on the road or
roadside.
Vehicles with shapes that may not
reflect radar waves.
Rear side radar sensors
The following systems utilize rear side
radar sensors.
Blind Spot Monitoring (BSM)Blind Spot Monitoring (BSM) Vehicle
Exit Warning
Rear Cross Traffic Alert (RCTA)Smart Brake Support (SBS) Rear
Crossing
Emergency Lane Keeping (ELK) Blind
Spot Assist
NOTE
When any of the following
conditions is met, the rear side radar
sensors may not be able to detect
target objects.
During inclement weather.The vehicle is driven on a sharp
curve or on bumpy roads.
Radar sensor from an adjacent
vehicle causes radio wave
interference.
The detection range of a front side
radar sensor is obstructed by an
adjacent wall or vehicle, or the
radar is reflected.
A vehicle suddenly enters the
detection range from the front or
side of your vehicle.
The target object is extremely
small.
The target object is extremely low/
high.
A vehicle approaches while
turning.
A vehicle that has stopped
suddenly starts to move.
Multiple objects move at the same
time.
The bumper around a rear side
radar sensor is deformed.
Foreign matter is adhering to the
bumper around a rear side radar
sensor.
The temperature near a rear side
radar sensor is extremely hot.
When towing a trailer.The rear side radar sensors may not
detect the following target objects.
Animals.Pe de st r ia ns .Bicycles and small motorcycles
moving at a low speed.
Shopping carts.Stationary objects on the road or
roadside.
Driving
Radar Sensors
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Target object is thin such as wire,
rope, or poles.
Target object absorbs waves easily
such as cotton or snow.
Target object has an angular shape.Target object is tall and wide at the
upper part.
Target object height is low.There are multiple target objects.Target objects are too close to the
sensors.
Ice, snow, or mud is adhering to
the sensor area.
Heavy rainfall or pressurized water
is applied to the sensor area.
The sensor areas are frozen.You cover the sensor with your
hand.
The area around the sensor has
received a strong impact.
The vehicle is excessively tilted.Under extremely hot or cold
weather.
Approached by an object that
generates ultrasonic waves, such as
the horn of another vehicle, the
engine noise of a motorcycle, the
air brake noise of a large vehicle,
or the sensor of another vehicle.
A commercially-available fender
pole or an antenna for a radio
transmitter is installed to the
vehicle.
The vehicle is moving towards a tall
or square curbstone, or a steep
grade.
The vehicle is moving towards an
uneven wall or stairs.
The vehicle is driven in a place with
low ceilings.
The vehicle is driven on bumpy
roads, inclines, gravel roads, dense
grass, or grating.
The ultrasonic sensor does not detect
target objects directly beneath the
bumper. Even if target objects which
are located at a position lower than
an ultrasonic sensor have been
detected, the ultrasonic sensor may
suddenly stop detecting as the
vehicle approaches the target object.
Front ultrasonic sensors
The following systems utilize front
ultrasonic sensors.
Pa r k i n g S e n s o r
Rear ultrasonic sensors
The following systems utilize rear
ultrasonic sensors.
Smart Brake Support (SBS) reverse
drive detection
Pa r k i n g S e n s o r
Driving
Ultrasonic Sensors
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The cameras include a function for
detecting abnormalities in the
camera, soiling of the camera’s front
surface, and informing the driver. If a
message appears on the screen that
can be addressed, follow the
directions of the message.
If there are water droplets, snow, or
mud on the camera lens, wipe it off
using a soft cloth. If the camera lens
is especially dirty, wash it off with
mild detergent.
Front camera
The following system use the front
camera.
360° View Monitor
Side cameras
The following system use the side
cameras.
360° View Monitor
Rear camera
The following systems use rear camera.
Smart Brake Support (SBS) reverse
drive detection
360° View MonitorRear View Monitor
Detection of pedestrians
The rear camera detects pedestrians
when all of the following conditions
are met.
The height of a pedestrian is about 1
to 2 meters.
The outline of a pedestrian is
recognized such as the head, both
shoulders, or the feet.
If any of the following conditions is
met, the rear camera may not be able
to accurately detect pedestrians and
the Smart Brake Support (SBS) reverse
drive detection may not operate
correctly.
There are multiple pedestrians.A pedestrian is close to a separate
object.
A pedestrian is crouching , lying, or
slouching.
A pedestrian suddenly jumps into
the road.
A pedestrian is holding something
(such as an open umbrella or large
baggage).
A pedestrian blends into the
background (such as in a dark
location at night or by wearing
clothes matching the background
color).
The surrounding area is dark (such as
during the night, early evening, or
early morning , or in a tunnel or
indoor parking lot).
Foreign matter is adhering to the rear
camera (water droplets, snow, mud).
The rear camera is exposed to strong
light (sunlight, vehicle headlights).
Driving
Cameras
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Driver MonitoringCamera
*
The driver monitoring camera detects
changes in the driver’s facial features
and estimates the driver's condition.
1. Driver monitoring camera

The following systems use the driver
monitoring camera.
Driver Monitoring (DM)Smart Brake Support (SBS) forward
detection function
Driver Personalization System
NOTE
Each system may not operate
normally if any of the following
conditions is met.
You are wearing glasses or
sunglasses
A cap or hat you are wearing
partially blocks the driver
monitoring camera's view of your
eyes, you have long bangs partially
covering your eyes, or a part of
your face is invisible due to a scarf,
face mask, beard, or hand.
The lighting conditions change
significantly (such as backlight,
light from the side, direct light
from the setting sun, or the
headlights of on-coming vehicles)
Device that emits near-infrared
light is used in the cabin.
The temperature in the cabin is
high.
The driver monitoring camera is
blocked by hands or arms.
There is more than one face in the
detection range of the driver
monitoring camera, such as when
the front passenger or a rear seat
passenger leans forward.
The driver’s face is far out of the
detection range of the driver
monitoring camera, such as when
the driver’s face is put outside of
the window.
Driving
Driver Monitoring Camera
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How to Use the LaneDeparture Warning System (LDWS)
LDWS operates
The LDWS operates when all of the
following conditions are met.
The vehicle speed is about 64 km/h
(40 mph)or faster.
The system detects white (yellow)
lane lines.
The CTS steering assist function is
not operating.
The system determines that the
vehicle may depart from the lane.
When the LDWS is operating, a screen
display and a warning sound (steering
wheel vibration and warning sound)
notify the driver of the danger.
Instrument cluster
Active driving display
NOTE
The LDWS operates only on the side
that detects white lines (yellow
lines).
The forward sensing camera (FSC)
may not be able to detect target
objects correctly, and the LDWS may
not operate normally.
Refer to Forward Sensing Camera
(FSC) on page 5-127.
The LDWS warning type can be
changed using Mazda Connect.
Refer to the Settings section in the
Mazda Connect Owner's Manual.
LDWS is temporarily canceled
If any of the following conditions is
met, the LDWS is canceled. In
addition, the LDWS is automatically
enabled when the condition changes
and the system is operable.
The turn signal lever is operated.The accelerator pedal is operated.The steering wheel is operated.The brake pedal is depressed.
Turning off the LDWS
There are 2 ways to turn off the LDWS.
Turn off the LDWS using Mazda
Connect.
Refer to the Settings section in the
Mazda Connect Owner's Manual.
Turn off the LDWS using the
i-ACTIVSENSE OFF switch.
Refer to How to Use the
i-ACTIVSENSE OFF switch on page
5-126.
Driving
Lane Departure Warning System (LDWS)
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Distance & Speed Alert(DSA)
*
The DSA is a system in which the
screen display notifies the driver that
the distance between your vehicle and
a vehicle ahead is close.
Warnings and Cautions
for Using the Distance & Speed Alert (DSA)
WARNING
Do not rely completely on the DSA.
The DSA may not be able to detect a
vehicle ahead depending on the type
of vehicle ahead and its conditions, the
weather conditions, and the road
conditions. In addition, the system is
not for maintaining the distance
between your vehicle and a vehicle
ahead. If you neglect to operate the
accelerator and brake pedals correctly,
it could lead to an accident.
Always check the surrounding
conditions and depress the brake
pedal or accelerator pedal while
keeping a safe distance from a vehicle
ahead or a vehicle following behind
you.
Driving
Distance & Speed Alert (DSA)
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Mazda Radar CruiseControl (MRCC)
*
MRCC is a system that reduces load on
the driver through constant speed and
headway control. The function
performs headway control to maintain
the distance with a vehicle ahead at a
constant preset speed without you
having to depress the accelerator or
brake pedal.
Warnings and Cautionsfor Using the Mazda
Radar Cruise Control
(MRCC)
WARNING
Do not rely completely on the MRCC.
The MRCC may not be able to detect a
vehicle ahead depending on the type
of vehicle ahead and its conditions, the
weather conditions, and the road
conditions. Additionally, the system
might be unable to decelerate
sufficiently if the vehicle ahead applies
the brakes suddenly or another vehicle
cuts into your lane, which could result
in an accident.
Always check the surrounding
conditions and depress the brake
pedal or accelerator pedal while
keeping a safe distance from a vehicle
ahead or a vehicle following behind
you.
Do not use the MRCC under the
following conditions. Otherwise, it
may result in an accident.
The vehicle is driven on roads other
than highways.
 The vehicle is driven on roads with
sharp curves or with heavy traffic
where sufficient distances between
vehicles cannot be kept.
 The vehicle is driven on roads where
acceleration and deceleration are
frequently repeated.
 The vehicle is exiting the main lane
on an expressway to enter an
interchange, a rest area, or a parking
area.
Driving
Mazda Radar Cruise Control (MRCC)
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The vehicle is driven on slippery
roads such as icy roads,
snow-covered roads, and unpaved
roads.
 The vehicle is driven on a long
downslope.
 The vehicle is driven on a steep
slope.
 A two-wheeled vehicle such as a
motorcycle or bicycle is traveling
ahead.
Switch the MRCC off when it is not
being used.
Leaving the MRCC on when it is not in
use is dangerous as it could operate
unexpectedly, resulting in an accident.
Do not leave the vehicle while the
vehicle is stopped by the MRCC
control.
Getting out of the vehicle while the
stop hold control is operating is
dangerous as the vehicle may move
unexpectedly and result in an accident.
Before leaving the vehicle, switch the
MRCC off, shift the selector lever to
the P position, and apply the parking
brake.
CAUTION
 If the vehicle is towed or you are
towing something, switch the MRCC
off.
 Turn off the MRCC when the vehicle
is running on a chassis roller.
Driving
Mazda Radar Cruise Control (MRCC)
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How to Use the Mazda Radar Cruise Control (MRCC)
MRCC operation conditions
The MRCC can be set when all of the following conditions are met.
The brake pedal is not depressed.The vehicle speed is about 0 km/h (0 mph) to 145 km/h (90 mph).The Hill Descent Control is not operating.
Setting the MRCC
1. Press the MRCC switch to turn the system on.
When the system is on, the MRCC standby indication (white) is displayed on
the screen.
2. Accelerate to the desired speed.
3. Set the vehicle speed by pressing the RES switch up (SET+) or down (SET-).
Constant speed driving starts when the vehicle speed is set. In addition, the set
speed is displayed on the screen, and the MRCC standby indication (white)
changes to the MRCC set indication (green) .
If a vehicle ahead is detected while traveling at a constant speed, the system
switches to headway control. The vehicle ahead indication is displayed on the screen
while in headway control.
Driving
Mazda Radar Cruise Control (MRCC)
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